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Earthquakes (Grade 10)

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Earthquakes

1. 
A                 is an instrument that records earthquake waves.
  1. mass
  2. seismometer
  3. seismogram
  4. frame
 
2. 
The amount of energy released by an earthquake is measured by its
  1. speed
  2. magnitude
  3. focus
  4. intensity
3. 
Long term earthquake predictions are best at predicting
  1. where an earthquake is likely to occur
  2. how much damage the next earthquake will cause
  3. when the next earthquake will occur
  4. how long the next earthquake will last
 
4. 
Which phrase below would best describe the plate movements that cause an earthquake?
  1. friction between two sliding plates, releasing energy
  2. smooth sliding between two plates, a gradual movement
  3. smooth pulling apart of two plates, a gradual movement
  4. friction being released as two plates move apart
5. 
The point on the earth's surface directly above the location at which an earthquake begins is known as the                .
  1. focus
  2. epicenter
  3. locus
  4. ground zero
 
6. 
The actual location within the earth where an earthquake begins is known as the                .
  1. focus
  2. epicenter
  3. locus
  4. ground zero
7. 
Small earthquakes which occur before a major movement are called                .
  1. body waves
  2. P shocks
  3. foreshocks
  4. primary shocks
 
8. 
As the distance from a quake's epicenter increases
  1. intensity increases
  2. intensity decreases
  3. wave speed increases
  4. the focus decreases
9. 
What part of the Earth doesn't transmit S-waves from a quake?
  1. epicenter
  2. focus
  3. mantle
  4. liquid part of core
 
10. 
To find the location of an earthquakes epicenter, at least                seismographs must be used.
  1. 1
  2. 3
  3. 5
  4. 7
11. 
A                  is a large wave caused by an underwater earthquake.
  1. sea-floor spread
  2. vent
  3. volcano
  4. tsunami
 
12. 
Which of the following describes primary waves created by an earthquake?
  1. they cause damage on the surface
  2. they cause up-and-down movement in the rock
  3. they are the fastest-moving waves
  4. they are the slowest-moving waves
13. 
Smaller earthquakes or tremors called                   often follow a major earthquake at frequent intervals for days or months, gradually decreasing in intensity.
  1. primary tremors
  2. secondary tremors
  3. aftershocks
  4. surface waves
 
14. 
What is the order in which seismic waves are recorded by a seismometer?
  1. S-wave, P-wave, surface wave
  2. surface wave, P-wave, S-wave
  3. P-wave, S-wave, surface wave
  4. S-wave, surface wave, P-wave
15. 
The Richter scale
  1. is not as accurate as the Mercalli scale
  2. is based on vibrations of the air
  3. measures of the strength of a seismic wave
  4. measures heat
 
16. 
Scientists can                 earthquakes by using seismographs, the Mercalli scale, and the Richter scale.
  1. measure
  2. predict
  3. weaken
  4. cause
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